Copilot Studio Agent Direct Line MCP Server

/** * Axios HTTP client configuration for Direct Line API */ import axios, { type AxiosInstance, type InternalAxiosRequestConfig, type AxiosResponse, } from 'axios'; import { maskSecret } from '../utils/secret-masking.js'; /** * Direct Line API base URL */ export const DIRECT_LINE_BASE_URL = 'https://directline.botframework.com/v3/directline'; /** * HTTP client configuration options */ export interface HttpClientOptions { timeout?: number; baseURL?: string; enableLogging?: boolean; } /** * Create configured axios instance for Direct Line API * @param options - Configuration options * @returns Configured axios instance */ export function createHttpClient(options: HttpClientOptions = {}): AxiosInstance { const { timeout = 5000, baseURL = DIRECT_LINE_BASE_URL, enableLogging = true, } = options; const client = axios.create({ baseURL, timeout, headers: { 'Content-Type': 'application/json', 'User-Agent': 'copilot-studio-agent-direct-line-mcp/1.0.3', }, }); // Request interceptor for logging if (enableLogging) { client.interceptors.request.use( (config: InternalAxiosRequestConfig) => { const startTime = Date.now(); (config as InternalAxiosRequestConfig & { metadata?: { startTime: number } }).metadata = { startTime, }; // Log request (with token masking) const authHeader = config.headers?.['Authorization'] as string | undefined; const maskedAuth = authHeader ? `Bearer ${maskSecret(authHeader.replace('Bearer ', ''))}` : 'None'; console.error(`[HTTP] → ${config.method?.toUpperCase()} ${config.url}`, { authorization: maskedAuth, contentType: config.headers?.['Content-Type'], }); return config; }, (error) => { console.error('[HTTP] Request error:', error.message); return Promise.reject(error); } ); // Response interceptor for logging client.interceptors.response.use( (response: AxiosResponse) => { const config = response.config as InternalAxiosRequestConfig & { metadata?: { startTime: number }; }; const duration = config.metadata?.startTime ? Date.now() - config.metadata.startTime : 0; console.error( `[HTTP] ← ${response.status} ${response.config.method?.toUpperCase()} ${response.config.url}`, { duration: `${duration}ms`, dataSize: JSON.stringify(response.data).length, } ); return response; }, (error) => { const config = error.config as InternalAxiosRequestConfig & { metadata?: { startTime: number }; }; const duration = config?.metadata?.startTime ? Date.now() - config.metadata.startTime : 0; if (error.response) { console.error(`[HTTP] ← ${error.response.status} ${error.config?.method?.toUpperCase()} ${error.config?.url}`, { duration: `${duration}ms`, error: error.response.data, }); } else if (error.request) { console.error(`[HTTP] ← No response ${error.config?.method?.toUpperCase()} ${error.config?.url}`, { duration: `${duration}ms`, error: error.message, }); } else { console.error('[HTTP] Request setup error:', error.message); } return Promise.reject(error); } ); } return client; }